Gas-liquid mass transfer : a comparison of down-and up-pumping axial flow impellers with radial impellers - Archive ouverte HAL Access content directly
Journal Articles Chemical Engineering Research and Design Year : 2004

Gas-liquid mass transfer : a comparison of down-and up-pumping axial flow impellers with radial impellers

Abstract

The performance of a down- and up-pumping pitched blade turbine and A315 for gas-liquid dispersion and mass transfer was evaluated and then compared with that of Rushton and Scaba turbines in a small laboratory scale vessel. The results show that when the axial flow impellers are operated in the up-pumping mode, the overall performance is largely improved compared with the down-pumping configuration. Compared with the radial turbines, the up-pumping A315 has a high gas handling capacity, equivalent to the Scaba turbine and is economically much more efficient in terms of mass transfer than both turbines. On the other hand, the uppumping pitched blade turbine is not as well adapted to such applications. Finally, the axial flow impellers in the down-pumping mode have the lowest performance of all the impellers studied, although the A315 is preferred of the pitched blade turbine.
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Dates and versions

hal-03602397 , version 1 (09-03-2022)

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Rodolphe Sardeing, Joelle Aubin, Catherine Xuereb. Gas-liquid mass transfer : a comparison of down-and up-pumping axial flow impellers with radial impellers. Chemical Engineering Research and Design, 2004, 8 (12), pp.1589-1596. ⟨10.1205/cerd.82.12.1589.58030⟩. ⟨hal-03602397⟩
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